M 5.0 earthquake: North Pacific Ocean (Japan) — March 13, 1988

M 5.0 earthquake: North Pacific Ocean (Japan) — March 13, 1988. Epicenter 563 km S of Hamamatsu, depth 396 km, 07:54 Local (1988-03-12 22:54 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (563 km S, Japan) — 29.768, 138.967

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